Hi, I have a few questions regarding propeller selection.
My boat is a 15 foot runabout powered by a mercury classic 50 and had a 10 1/8 x 15 blackmax prop. Hole shot wasn't bad when lightly loaded but with 4 persons on board it really struggled to plane. Top speed and revs were 30mph and 5200 rpm light load and 24mph 4700 rpm heavy. I later upgraded to a tp hustler 10.5x13 prop and holeshot improved considerably but oddly revs went down to 5100 with top speed at 27mph lightly loaded. Boat struggles to keep up on plane with a heavy load and reaches 21-22 mph and about 4500rpm. Do you think that dropping to a hustler 10 3/8 x 11 would be a good idea?
My boat is a 15 foot runabout powered by a mercury classic 50 and had a 10 1/8 x 15 blackmax prop. Hole shot wasn't bad when lightly loaded but with 4 persons on board it really struggled to plane. Top speed and revs were 30mph and 5200 rpm light load and 24mph 4700 rpm heavy. I later upgraded to a tp hustler 10.5x13 prop and holeshot improved considerably but oddly revs went down to 5100 with top speed at 27mph lightly loaded. Boat struggles to keep up on plane with a heavy load and reaches 21-22 mph and about 4500rpm. Do you think that dropping to a hustler 10 3/8 x 11 would be a good idea?